In CAD world, the most prominent group is that unites software vendors and industrial users. There are also various technical groups that define usage conventions and recommended practices to ensure better interoperability between software applications. STEP is developed and maintained by the ISO technical committee. STEP addresses product data from mechanical and electrical design, geometric dimensioning and tolerancing, analysis and manufacturing, as well as additional information specific to various industries such as automotive, aerospace, building construction, ship, oil and gas, process plants and others. Typically, STEP can be used to exchange data between CAD, CAM, CAE, PDM/enterprise data modeling and other CAx systems. However even today both formats co-exist and data in IGES and STEP represent lion share of all CAD files. STEP has been initially designed with the idea to supersede the IGES format (which was the first broadly used vendor-neutral CAD file format). STEP or "Standard for the Exchange of Product model data" is also referred as ISO 10303.
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